[cisco-voip] conference g729

[Peter Slow]

Roberto,
   Yes, you _must_ use a DSPFarm of some sort to support a g.729
conference of any type with CUCM. the Software CFB in CUCM will do a
mixed-mode conference of G.711a-law, u-law, and/or the cisco
proprietary wideband codec. these are the only codecs it supports. A
DSPFarm configured to support g.729 and 711 will, in general support a
711/729 mixed mode, or g.711 or 729 only conference.

How many participants do you plan on having (maximimum) in these calls
at any one time?

-Peter

On Thu, Apr 30, 2009 at 11:44 AM, Roby <granata77 at libero.it> wrote:
> Actually we have only g711 and we don't have any DSP hardware/software for conferencing.
>
> If we use g729 in place of g711, what happens? However, I must use DSP?
>
> I would like understand what should I do "economically" to use the conference: if I should use g729 with g711 (and then use a DSP), or I can use only g729 without DSP?
>
> Thanks.
>
>
>
>
> ---------- Initial Header -----------
>
> >From      : "Scott Voll" svoll.voip at gmail.com
> To          : "Roby" granata77 at libero.it
> Cc          : "cisco-voip" cisco-voip at puck.nether.net
> Date      : Thu, 30 Apr 2009 08:18:54 -0700
> Subject : Re: [cisco-voip] conference g729
>
>
>
>
>
>
>
>> the question become are you using the CM server (software) for Conferencing?
>> (g711 only)
>>
>> if yes, then you will need DSP's for Transcoding because the Software will
>> not do G729 weather some or all phones are in a G729 region.
>>
>> if no (you use HW / DSPs) then it doesn't matter if its G711 or G729 or
>> both.
>>
>> help?
>>
>> Scott
>>
>> On Thu, Apr 30, 2009 at 8:13 AM, Roby <granata77 at libero.it> wrote:
>>
>> > I don't undestand, sorry...
>> >
>> > My question is this: with the g711 (throughout the all network) I have no
>> > problems of conference; if we use a pool of phone with the g729 and another
>> > pool with the g711, we need a DSP; but if we use only the g729 (throughout
>> > the all network) what happens? We need to use in any case a DSP farm? Or the
>> > conference works equally without configure nothing (hardware/software)?
>> > I hope that I explained better now.
>> >
>> > Thanks.
>> >
>> >
>> > ---------- Initial Header -----------
>> >
>> > From      : "Scott Voll" svoll.voip at gmail.com
>> > To          : "Roby" granata77 at libero.it
>> > Cc          : "cisco-voip" cisco-voip at puck.nether.net
>> > Date      : Thu, 30 Apr 2009 07:58:24 -0700
>> > Subject : Re: [cisco-voip] conference g729
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > > I think it depends on what your doing.
>> > >
>> > > if your using the software conference bridge based on CM servers it only
>> > > does G711 at which point you need DSP for Transcoding 729 to 711.
>> > >
>> > > or the other option is to create a DSP farm for hardware conferencing
>> > that
>> > > will do both 729 or 711 or both.  then you don't need the transcoding as
>> > the
>> > > hw confering DSP's do the transcoding.  but if you run applications (such
>> > as
>> > > IPCCx) that only run g711 then you will still need DSP's for transcoding.
>> > >
>> > > Hope that answers your question.
>> > >
>> > > Scott
>> > >
>> > > On Thu, Apr 30, 2009 at 7:33 AM, Roby <granata77 at libero.it> wrote:
>> > >
>> > > > Hi.
>> > > > I have a cluster of Call Manager with phone and region configured on
>> > g711.
>> > > > I know that the conference it only works with the codec g711.
>> > > > If we have a pool of phone in g729, for the conference, I nedd to
>> > create a
>> > > > DSP farm.
>> > > >
>> > > > But if we have all the region in g729, for the conference, I have
>> > always
>> > > > need to create a DSP farm? Or is there a cheaper solution?
>> > > >
>> > > >
>> > > > Bye.
>> > > > Roberto
>> > > >
>> > > > _______________________________________________
>> > > > cisco-voip mailing list
>> > > > cisco-voip at puck.nether.net
>> > > > https://puck.nether.net/mailman/listinfo/cisco-voip
>> > > >
>> > >
>> >
>> >
>>
>
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